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C# - Find negative double numbers from objects list using LINQ

Learn, how to find the negative double numbers from the list of objects using Linq in C#? By Nidhi Last updated : April 01, 2023

Here we will find the negative double numbers from the list of objects. Here we use OfType() method and Where() method to filter negative double values and print them on the console screen.

C# program to find the negative double numbers from the list of objects using LINQ

The source code to find the negative double numbers using Linq is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# Program to find negative double numbers from 
//the list of objects using Linq.

using System;
using System.Linq;
using System.Collections.Generic;

class Demo {
  static void Main(string[] args) {
    List < object > objectList = new List < object > () {
      101,
      "Amit",
      102,
      "Joseph",
      -10.3,
      "RK Verma",
      104,
      "Sanjay Shukla",
      10.5F,
      "Pramod Pandey",
      -10.7
    };

    List < double > result = objectList.OfType < double > ().Where(n => n < 0).ToList();

    foreach(double neg in result) {
      Console.WriteLine(neg + " ");
    }
  }
}

Output

-10.3
-10.7
Press any key to continue . . .

Explanation

In the above program, we created a list of objects that contains different types of values then we find negative double numbers using OfType() and Where() method using the below code.

List<double> result = objectList.OfType<double>().Where(n=>n<0).ToList();

Then we printed filtered negative double numbers on the console screen.

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